I’ve been through cognitive behavioral therapy for anxiety which didn’t do anything. My sleep issues seem to be familial as both my mother and brother had them. My mother didn’t take anything and once I asked her how she could just go through night after night without sleep and she said usually on the 3rd night she’d go to sleep on what she called the sheer exhaustion method. She was right. On the 3rd day without sleep, I’d just conk out laying on the couch watching tv and when I’d awake my husband would tell me I’d been deeply asleep for 4 hours.